https://demo.phppointofsale.com/index.php/home
https://go.tradegecko.com/#/getting_started
https://goreto.myshopify.com/admin
https://app.clearlyinventory.com/inv/inventory#
https://goreto.salesbinder.com
https://my.posterita.com/d/Goreto
http://www.asapsystems.com/barcloud/inventory-management-software-online.php
https://proxyeast6.merchantos.com/?form_name=ui_tab&tab=choose_register
other:::
http://www.capterra.com/inventory-management-software/ -best to view number of demos
http://www.softwareadvice.com/retail/web-based-point-of-sale-software-comparison/